Fix userspace clone by clobbering all variables on clone

2016-09-13 20:31:45 -06:00 · 2016-09-13 20:31:45 -06:00 · dc87afd2ac
commit dc87afd2ac
parent ce50faf7ca
6 changed files with 35 additions and 8 deletions
--- a/arch/x86_64/src/lib.rs
+++ b/arch/x86_64/src/lib.rs
@ -126,7 +126,16 @@ macro_rules! interrupt_error {
            }

            // Push scratch registers
-            asm!("push rax
+            asm!("xchg bx, bx
+                pop rax # Error
+                pop rbx # RIP
+                pop rcx # CS
+                pop rdx # RFLAGS
+                pop rsi # RSP
+                pop rdi # SS
+                cli
+                hlt
+                push rax
                push rcx
                push rdx
                push rdi